Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hoi phieu » hoi hieu, co phieu, doi chieu
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
dan toan » van toan, dan than, manh toan
bai toan » bai tap
ho hieu » ho chieu, hoi hieu, nho hieu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (hoi phieu)) lang - hanh tranh cua hang cong ((dan toan) OR (bai toan)) cao~.
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) or (hoi phieu)) lang - hanh tranh cua hang cong ((dan toan) or (bai toan)) cao*.